Profiling using Signpost

Presented at CA.swift #7
https://cyberagent.connpass.com/event/110569/

Transcript

1. P R O F I L I N G U S I N G S I G N P O S T T O S H I H I R O S U Z U K I
2. T O S H I 0 3 8 3
3. A G E N D A • Signpost • Custom Instruments
4. S I G N P O S T
5. I N T R O D U C E D I N W W D C 2 0 1 8
6. L O G G I N G A P I • 2016: *LOG => OSLOG • 2018: SIGNPOST
7. W W D C 2 0 1 8
8. I N S T R U M E N T S
9. S I G N P O S T
10. I N T E R VA L
11. P O I N T S O F I N T E R E S T
12. P O I N T S O F I N T E R E S T
14. W W D C 2 0 1 8
15. H O W I T ’ S L I G H T W E I G H T 1 / 2 W W D C 2 0 1 8 [Logging Optimization] String construction is delayed until observation.
16. H O W I T ’ S L I G H T W E I G H T 2 / 2 [Observer Optimization] Opt-out immediate mode
17. O N LY D U R I N G O B S E R VAT I O N W W D C 2 0 1 8
18. D I S A B L I N G S C E N A R I O W W D C 2 0 1 8
19. C A S E S T U D Y
20. B E F O R E
21. A F T E R https://github.com/toshi0383/Bitrise-iOS/pull/51
22. D E FA U LT T R A C E V I E W Annoying per `name`
23. C U S T O M I N S T R U M E N T S
24. C U S T O M I N S T R U M E N T S • Establish common debug workflow of your team
25. * . I N S T R P K G • xml + CLIPS lang • Instruments Developer Help
26. C R E AT I N G C U S T O M I N S T R U M E N T S W W D C 2 0 1 8
27. D U P L I C AT E D R E Q U E S T D E T E C T I O N W W D C 2 0 1 8
28. A D VA N C E D S C R I P T I N G P O W E R E D B Y. .
29. B U G ?
30. S U M M A RY • Signpost can visualize your App’s Performance • Even better visualization with Custom Instruments
31. T I P S
32. W W D C 2 0 1 6
33. W R I T I N G W R A P P E R ⚠ It would cost you array construction and method dispatching. ⚠
34. I N T E G R AT E W I T H R X I F Y O U H A P P I LY PAY A R R AY C O N S T R U C T I O N C O S T. .
35. T I P S • Sign with Development Certificate • Use immediate mode only for debug level profiling • No sample codes available from Apple.
 Watch wwdc session to grep source-code
 OR refer to https://github.com/toshi0383/Bitrise-iOS
36. E N A B L E I N P R O D U C T I O N ? • “Always enable to avoid execution timing problems.” • Less than 1ms for 10000 times `os_log(.error)` outputs without observing.
37. I N S TA L L I N G C U S T O M I N S T R U M E N T S • https://qiita.com/toshi0383/items/ ec14467869e25d1b5d13
38. WAT C H V I D E O S F O R M O R E I N F O • Fix Bugs Faster using Activity Tracing: WWDC 2014 • Unified Logging and Activity Tracing: WWDC 2016 • Measuring Performance Using Logging: WWDC 2018
39. D E M O
40. T H A N K S